HTTP response header

The Server response-header field contains information about the software used by the web server to handle the request.

Header usage statistics

Server response header information and usage statistics.

Websites using header Server 91,408,584
Percentage of websites that use Server header 92.28%
Total discovered header values 10,001
Header uses directives No
Header values are unique or random No
Most popular in the country United States of America

Connected technologies

Technologies that utilize the header

Apache, category Web Servers, total 32,824,098 websites
Amazon Cloudfront, category Content Delivery Networks, total 637,737 websites
Amazon ELB, category Load Balancer, total 637,623 websites
Amazon S3, category Miscellaneous, total 320,995 websites
Akamai, category Content Delivery Networks, total 195,886 websites
Amazon EC2, category Web Servers, total 139,419 websites
Allegro RomPager, category Web Servers, total 1,585 websites
AOLserver, category Web Servers, total 411 websites
Akka HTTP, category Web Servers, total 220 websites
Airee, category Content Delivery Networks, total 186 websites

Distribution by websites popularity

Server detection in the top websites by popularity

Top 10k sites 11,098 websites
Top 100k sites 113,188 websites
Top 1m sites 1,137,658 websites

Websites utilizing Server

List of websites that use Server header

Domain Country Rank Contacts United States of America 1 United States of America 3 United States of America 3 United States of America 4 United States of America 5 United States of America 6
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Geographical Distribution

Header usage distribution by websites across the globe.

Common header values

List of top common Server header values

Header value Value prevalence
Apache 26.31%
nginx 21.55%
cloudflare 7.47%
Microsoft-IIS/7.5 5.16%
LiteSpeed 3.20%
openresty 3.14%
Microsoft-IIS/8.5 2.86%
Squarespace 2.37%
nginx/1.16.1 1.77%
Microsoft-IIS/10.0 1.76%
Apache/2 1.56%
Apache/2.4.48 (Unix) 0.92%
Apache/2.4.25 (Debian) 0.64%
nginx/1.18.0 0.63%
DPS/1.11.6 0.61%
nginx/1.20.1 0.56%
nginx/1.19.10 0.48%
Apache/2.4.29 (Ubuntu) 0.46%
aruba-proxy 0.42%
awselb/2.0 0.41%